Nut-lock.



i UNITED STATES PATENT OFFICE.

MICHAEL MORAN, OF ST. LOUIS, MISSOURI, ASSIGNOR OF ONE-HALF TO FRANK H. GERVAIS, OF SAME PLACE.

Nur-LOCK.

SPECIFICATION forming part of Letters Patent N o. 657,436, dated September 4, 1900.

Application led February 3, 1900. Serial No. 4,451. (No model.)

To all whom it 1er/ay concern:

Beit known that I, MICHAEL MoRAN, a citi zen of the United States, residing at the city of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Nut-Locks, of Which the following is a full, clear, and exact description, reference being had to theaccompanying drawings, forming part of this specification.

My invention relates to a nut-lock of that class known as nut-lock washers and in which a tongue is utilized that is adapted t0 be bent outwardly to engage the nut and hold it from turning.

One object of the invention is to produce a nut-lock washer of the character named in which the tongue may be again bent rearwardly in the event of its being desired to remove the nut at any time.

A further object of the invention is to provide a lip at the bolt-hole of the washer adapted to enter the bolt-hole in the fish-plate of a railway-rail to prevent the washer from turning.

My invention consists in features of novelty hereinafter fully described, and pointed out in the c1aims.` Y

Figure I is a perspective view looking at the rear face of my improved washer. Fig.` II is a perspective view of the nut-lock shown applied in locking position to the bolt and nut of a railway-rail joint. Fig. III is aside View of the nu tlock, the fish-plate being shown in cross-section. Fig. IVis a view, partly `in horizontal section, taken on the line IV IV, Fig. II. y Y

A designates a railway-rail, and B fish; plates. y.

l designates a bolt provided with a nut 2. y

3 is a nut-lock washer having a bolt-hole 4 and containing in its rear face-a longitudi- Daily-extending centrally-positioned groove 5. Struck from the body of the washer at the bolt-hole LLis a lip 6, that is designed to enter the bolt-hole inthe fish-plate B to hold the washer from turning, which is occasioned by reasonlof the bolt-hole in the fish-plate being universally of oblong configuration, so

lip 6 alongside of the bolt, while the bolt fits snugly in the fish-plate bolt-hole above and below.

7 designates the locking'- tongue of the washer, which is carried by the extension S of the washer-body andis provided with a beveled end '72t to receive the introduction of a cold-chisel or other'implement by which the tongue may be forced outwardly.

` It not infrequently becomesnecessary to remove nuts from bolts to which they have been locked, and in order to provide forsucli removal it is necessary that thelocking-tongue 7 and the washer by which it is carried be of such shape that the` tongue may be forced backwardly beyond the rear plane of the nut. In order to provide for this backward movement of the locking-tongue, I provide the groove 5, of a Width corresponding to the length of the tongue, said groove being continued across the tongue,V so as to make the thickness of the washer at the groove and the thickness of the tongue approximately the same. Therefore when the tongue is bent backwardly after being bent outwardly to lock the nut it is possible to force the tongue back beyond the face plane of the washer, as seen by dotted lines in Fig. III, in order that the nut may be turned to remove it, whereas were the tongue and body of the Washer of the same thickness throughout when the tongue was struck backwardly it would rebound from the fish-plate and could not be brought flush with the face plane of the washer and would consequently interfere with the removal of the nut.

In making the washers I propose to roll the blanks, in which operation the groove 5 is produced throughout the length of the washer.

I claim as my invention- 1. A nut-lock Washer comprising a body provided with a longitudinal centrally-positioned-groove in its rear face and a lockingtongue of a thickness corresponding to the thickness of the body of the washer at the location of said groove; substantially as described.

2. A nut-lock washer comprising abody thatthere isspace for the introduction of the provided with a longitudinal centrally-positioned groove,a10ckng-tongue of eorresporrdbolt-hole in the fish-plate of a railway-rail,

ixnlg thieimesisY ,te the body of said washer at snhmtaliy als described.

t; e location-of said groove, said-tongue hav- Y Y A fing a beveled end for lche engagement of a. i MICHAEL. MORAN' 5 tool, arid a lip bent rearwardly from the body In presence ofof said Washer at. the location' of the bolt-hole E. S. KNIGHT,

therein, said lip being adapted to enger the, M11). SMITH. 

